"RastrWin" software complex
dedicated to power flow analysis, constrained optimization, fault analysis,
dynamic simulation in large-scale electric power systems.
"RastrWin"
is used in more than 280 organizations
in Russia, Kazakhstan, Kyrgyzstan, Uzbekistan, Belarus, Moldova, Mongolia, Yugoslavia.
Issued over 20,000 licenses for the use.
Solves the power flow analysis problems for large-scale electric power systems of more than 200,000 buses

In Russia, it is the main software for power flow analysis. The main users are:

System Operator of the United Power System (SO-CDU UPS) and its subsidiaries;